Daily care:
Regularly check whether there are signs of pests and rodents in the distribution cabinet, and take appropriate trapping measures to prevent pests and rodents from damaging electrical equipment.
Confirm whether all warning signs and maintenance signs are placed in the correct position, and whether emergency tools and lamps are complete and normal.
Check whether the cable connectors are hot and discolored, whether the grounding wires are rusted, and ensure that the cable connections are firm and not overheated.
Check whether the capacitor casing in the capacitor cabinet is in good condition, whether there is leakage or expansion, and whether the indicator light is in good condition.
Clean the inside and outside of the distribution cabinet regularly to remove dust and dirt, and maintain good ventilation and heat dissipation conditions.
First level maintenance:
Check whether the busbar and its lower lead are firm, whether the secondary circuit wiring is firm, and whether the fuse is intact.
When the air switch is disconnected without capacitor, test the action of the capacitor controller, and adjust the overvoltage protection, undercurrent protection, and switching threshold.
All indicator lights should be intact, check whether the controller switch position is normal, the operation should be normal, and whether the manual debugging mechanical interlocking part is reliable.
Check whether the fasteners of each soft starter and inverter are loose.
Secondary maintenance:
Check whether the drawer switch can be pushed in or out flexibly, whether its mechanical locking is reliable, and whether the contactor contacts are in good condition.
Check whether the elastic force of each blade in the circuit breaker is normal and whether the arc extinguishing device is intact.
Check whether the wiring nuts of each cable head are tightened to ensure the stability of the cable connection.
After disconnecting the main switches of the power receiving cabinet and the contact cabinet, check whether the secondary wiring head has good contact and is tightened without looseness.
Safety Precautions:
Before maintenance, the power supply must be cut off to ensure that the voltage on the power distribution cabinet has been eliminated.
Operators should wear anti-static clothing, insulating shoes, and insulating gloves for operation.
During maintenance, strictly abide by safety regulations and recommendations. If necessary, contact professionals for repairs.
